Compare 521 vs 527
| Property | 521 | 527 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 5211 | 171 × 311 |
| Prime factorization | 521 | 17 × 31 |
| Divisors count | 2 | 4 |
| Divisors | 1, 521 | 1, 17, 31, 527 |
| Number of properties | 6 | 1 |
| Chen primes | 70th | |
| Lucas primes | 8th | |
| Primes | 98th | |
| Pythagorean primes | 46th | |
| Semiprimes | 163rd | |
| Solinas primes | 39th | |
| Twin primes (1st member) | 25th | |
| Roman numberals | DXXI | DXXVII |
| Base 2 | 10000010012 | 10000011112 |
| Base 3 | 2010223 | 2011123 |
| Base 4 | 200214 | 200334 |
| Base 5 | 40415 | 41025 |
| Base 6 | 22256 | 22356 |
| Base 7 | 13437 | 13527 |
| Base 8 | 10118 | 10178 |
| Base 9 | 6389 | 6459 |
| Base 10 | 52110 | 52710 |
| Base 11 | 43411 | 43a11 |
| Base 12 | 37512 | 37b12 |
| Base 13 | 31113 | 31713 |
| Base 14 | 29314 | 29914 |
| Base 15 | 24b15 | 25215 |
| Base 16 | 20916 | 20f16 |